r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 588

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 10 I/O Ports
• P52/SCK2/IRQ2-A/BACK-B/PO4-B/TIOCA4-B/TMO0-B
• Modes 1, 2, 4, and 7 (EXPE = 1)
BRLE
BACKS
TPU channel
4 settings
OS3 to OS0
CKE1
C/A
CKE0
P52DDR
NDER4
Pin function
Rev. 1.00 Sep. 19, 2008 Page 560 of 1270
REJ09B0466-0100
The pin function is switched as shown below according to the combination of the operating
mode, bit EXPE, bit BRLE in BCR of the bus controller, bits OS3 to OS0 in TCSR0 of 8-bit
timer, bits MD3 to MD0 in TMDR_4 of TPU, bits IOA3 to IOA0 in TIOR_4, TPU channel 4
settings by bits CCLR1 and CCLR0 in TCR_4, bit NDER4 in NDERL of PPG, bit C/A in
SMR_2 and bits CKE0 and CKE1 in SCR_2 of the SCI, bits PPGS, TPUS, and TMRS in
PFCR3, bit BACKS in PFCR4, bit P52DDR, bit NDER4 in NDERL of the PPG, and bit ITS2
in ITSR of the interrupt controller.
(1) in table
TIOCA4-B
output*
below






3
input
P52

0
BRLE = 0 or BRLE = 1 and BACKS = 0
output
P52
0
1
0
0
output*
PO4-B
IRQ2-A interrupt input*
0
1
1
(2) in table below
All 0
2
output
SCK2
TIOCA4-B input*


1
output
SCK2



1
1
3
SCK2
input




1
TMO0-B
Not all 0
output*





4
BACKS = 1
BRLE = 1
BACK-B
output
and






